I'd buy performance issues, but on that hardware that surprises me. My desktop was a 2700X with a 980Ti and I didn't notice issues, but it's good to know that that mileage still varies.
(Now it's a 3900X with a 2070S and surprise, still none.)
(Now it's a 3900X with a 2070S and surprise, still none.)
Here, 4k with Vega and Mutter/Wayland is flawless.